What is the equation for 9-what equals 1-5?

Answer 1

9-x=1-5.

Does that answer your question?

To solve this equation, take these steps:

Simplify: 9-x=4

Add x to both sides: 9-x+x = 4+x

Simplify: 9+x+4

Switch sides (to get +x on the left) : x+4=9

Subtract 4 from both sides: x+4-4=9-4

Simplfy: x=5